--JAMES. [18] Genus _Sciurus_, L.--S. _lateralis_, SAY.--_Above_ brownish cinereous intermixed with blackish; on each side of the back a dull yellowish-white dilated line, broader before, margined above and beneath with black, originating upon the neck anterior to the humerus, and not attaining the origin of the tail; no appearance of a vertebral line; thigh, neck anterior to the tip of the white line, and top of the head tinged with ferruginous; _orbits_ whitish; _tail_ short, thin, with a submarginal black line beneath; _nails_ of the anterior feet elongated: _thumb tubercle_ furnished with a broad nail; _sides_ dull yellowish-white; _beneath_ pale, intermixed with blackish.--JAMES. [19] Étienne Geoffroy Saint-Hilaire (1772-1844) began the collection of animals for the Jardin des Plantes, and after 1794 was the collaborator of Cuvier. He was a prolific writer, and previous to Long's expedition had prepared a _Catalogue des Mammifères du Muséum national d'Histoire naturelle_ (1813).--ED. [20] _Hirundo lunifrons_, SAY.--_Above_ brownish-black, more or less varied with violaceous on the back and wing-coverts; _top of the head_ exclusively blackish-violaceous, a large white frontal lunule; _bill_ black; _rump_ and _tail coverts_ pale ferruginous; _chin_, _throat_, and _neck_ beneath, dark ferruginous extending in a narrow band upon the hind head; _breast_ pale rufous ash; _axillæ_ and _inferior wing coverts_ dirty brownish; _shoulders_ dull whitish, with small black and pale ferruginous spots; _belly_ and _vent_ flanks white, obsoletely dashed with brown; _inferior tail coverts_ dusky, margined with white; _tail_ entire, not surpassing the tips of the wings, the exterior feather margined with white on the inner web; _wing_ and _tail-shafts_ brown above, white beneath; _the tail feathers_ in some lights have a slightly-banded appearance. Length 5½ inches.--JAMES. [21] Genus _Coluber_.--C. _testaceus_, SAY.--Pale sanguineous, or testaceous above, beneath sanguineous immaculate. Pl. 198. Sc. 80? This is a large species equal in size to the C. _constrictor_. It moves with great rapidity, and in general form and size it resembles C. _constrictor_. The scales are large. A specimen is in the Philadelphia Museum.--JAMES. [22] _Emberiza amœna_, SAY.--_Head_ and _neck_ bluish green; _back_ brownish black more or less intermixed with blue and a little brown ferruginous; _rump_ pure blue; _smaller wing coverts_ dull blue, brown at base, and tipped with white, forming a band; _greater wing coverts_ blackish, tipped with white, forming a narrow band; _wing_ and _tail feathers_ blackish-brown with blue exterior margins; _belly_, _inferior tail coverts_ and _lower part of the breast_ white; _superior portion of the breast_ pale ferruginous; _neck_ bright green; _bill_ and _feet_ pale.--JAMES.